How severe is CVE-2019-6569?

CVE-2019-6569 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2019-6569 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-6569?

CVE-2019-6569 primarily affects Siemens Scalance X-200 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-6569?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2019-6569 published?

CVE-2019-6569 was published on 2019-03-26 and last updated on 2026-06-17.

CVE-2019-6569

CVE-2019-6569 is a critical-severity vulnerability in Siemens Scalance X-200 Firmware with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-440.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 6.4
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-440
Affected product: Siemens Scalance X-200 Firmware
Published: 2019-03-26
Last modified: 2026-06-17

Description

The monitor barrier of the affected products insufficiently blocks data from being forwarded over the mirror port into the mirrored network. An attacker could use this behavior to transmit malicious packets to systems in the mirrored network, possibly influencing their configuration and runtime behavior.

Frequently asked questions

What is CVE-2019-6569?: The monitor barrier of the affected products insufficiently blocks data from being forwarded over the mirror port into the mirrored network. An attacker could use this behavior to transmit malicious packets to systems in the mirrored network, possibly influencing their configuration and runtime behavior.
How severe is CVE-2019-6569?: CVE-2019-6569 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2019-6569 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-6569?: CVE-2019-6569 primarily affects Siemens Scalance X-200 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-6569?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2019-6569 published?: CVE-2019-6569 was published on 2019-03-26 and last updated on 2026-06-17.

References

https://cert-portal.siemens.com/productcert/pdf/ssa-557804.pdf

Affected products (5)

cpe:2.3:o:siemens:scalance_x-200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_x-300_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xp-200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xc-200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_xf-200_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Siemens Scalance X-200 Firmware

CVE-2019-10942 — High (CVSS 8.6): A vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions <…
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